The Aviation DataBase: Service Information: Nomad Aerospace Technologies of Australia
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Service BulletinsService Letters

Service Bulletins
NameRevisionLangSubjectDate
en Alert Control Wheel Assembly Retaining Pin Pt No. 1/N-45-1223 - Removal and Replacement by Using Bolt with Slotted Nut06/30/1978
en Alert Engine Nose Fairing Anti-Icing - Reduced Length of Control Valve Shaft and Rigging Check12/04/1978
1 en Alert Horizontal Stabiliser - Loose Rivets01/19/1978
2 en Alert Horizontal Stabiliser Trim Tab - Replacement of Actuator Rods Attaching Bolts/Nuts11/30/1978
1 en Alert Hot Air Check Valve 1/N-74-334 Inspection and Temporary Addition of Clamp Around Flange Joint06/22/1978
en Alert Wiring Changes to King Audio System Installation (KNA - 20) to Prevent Inadvertent Radio Transmissions (CO G50)08/28/1978
1 en Alert Electrical Power - DC Generation - Generator Cable Inspection at Firewall and Feed-Through Stud Modification08/04/1989
1 en Alert Horizontal Stabiliser Control System - Wind Gust Damage10/30/1970
en Alert Flight Control Obstruction12/03/1970
en Alert Attachment of RH and LH Trim Tab Hinge to Horizontal Stabiliser02/12/1980
1 en Alert Rudder Control Torque Shaft Universal Joint MS 20271B16 LH and RH Inspection for Deterioration08/13/1982
en Alert Inspection of Autopilot Aileron Servo Unit Bridle Cable Assembly P/N 1/N-45-131711/12/1981
2 en Alert Flight Controls - Revised Compliance Requirements for Embodiment of Nomad Service Bulletins NMD-27-9 and NMD-27-1501/17/1990
1 en Alert Inspection and Replacement or Rework of Control Wheel Sub-Assemblies11/05/1982
en Alert LH & RH Control Column Universal Joint Taper Pins - Inspection and Replacement08/18/1988
2 en Alert Flight Controls - Flap Microswitch Cover Assembly (Mod N608)04/18/1991
2 en Alert Flight Controls - Revision of Flap Auto-Select Switch System (Mod N46)06/01/1992
en Alert Flight Controls - Flaps - Component Safe Lives03/04/1994
2 en Alert Flight Controls - Rudder Control Lever Shaft04/29/2004
en Alert Wings - Flight Controls - Flaps - Modified Outboard Forward Flap Linkage (Mod N953)02/20/2008
1 en Alert Nomad Fuel System - Fuel Tank Selector and Fuel Shut-Off Push-Pull Cables - Inspection for Incorrectly Crimped Sleeves09/02/1980
2 en Fuel - Auxiliary Tank - Inspection of Fuel and Vent Pipes in Wings for Wear at Supporting Clips05/03/1991
en Alert Landing Gear - Temporary Revision to Landing Gear Up Warning Horn Microswitch Setting02/10/1995
2 en Alert Navigation - Standby Compass - Warning Placard (Mod N717A)01/05/1999
en Alert Malfunction of Emergency Exit Door Latch Mechanism09/29/1981
en Alert Operation of Emergency Exit Impeded by Interior Trim Panel08/08/1984
en Alert Doors - Cockpit and Cabin Door Handles - Inspection/Modification01/16/1990
1 en Alert Fuselage - Wing Centre Section Spar Support Bracket Attachment - Inspection (AN0 DCA/GAF-N22/22 Refers)08/14/1978
en Alert Rudder Pedal Guards - Improved Clearance in Pedal Slots07/10/1978
en Alert Fuselage - Rudder Pedal Guard - Relocation of Brush Seals (Mod N728)08/25/1989
2 en Alert Fuselage - Stub Fin - Inspection for Deformation of Stub Fin Front Spar11/15/1990
3 en Alert Fuselage - Stub Fin- Replacement of Plate PN 1D/N-12-5710/24/1995
2 en Alert Structure Assembly - Fuselage - Rear - Inspection, Repair and Incorporation of Mod N806 (Rear Fairing Strengthening)10/06/1997
3 en Alert Structure Assembly - Fuselage - Rear - Inspection, Repair and Incorporation of Mod N806 (Rear Fairing Strengthening)06/01/1999
2 en Alert Fuselage Rear Section - Stub Fin - Inspection03/18/1998
1 en Alert Fuselage Rear Section - Stub Fin - Upper Fin Rear Attachment Points - Inspection10/17/1995
1 en Alert Nacelles - Engine Upper Cowl Access Panel & Lower Cowl Locking Device07/18/1989
en Alert Rudder Tab Mass Balance Hinge Pin03/02/1979
en Alert Rudder - Inspection and Modification of Intercostals and Trim Tab Control Rod (Mod N437)01/29/1980
1 en Alert Horizontal Stabiliser Pivot Brackets - Loose Attachment Bolts08/22/1980
1 en Alert Stabilizers - Vertical Stabilizer - Attachment Bold and Bracket Replacement and Inspection07/11/1991
1 en Alert Stabilisers - Horizontal Stabiliser - Trim Tab Hinge Repositioning and Limiting of Trim Travel09/20/1990
8 en Alert Stabilizers - Horizontal Stabilizer - Centre Section Inspection and Repair (Mod N663 and Mod N768)04/15/1994
9 en Alert Stabilizers - Horizontal Stabilizer - Centre Section Inspection and Repair (Mod N663 and Mod N768)07/27/2006
1 en Alert Stabilisers - Horizontal Stabiliser - Pivot Bearings and Brackets - Inspection for Side Play09/20/1990
en Stabilisers - Horizontal Stabiliser - Gust Damper Mounting Bolts Replacement (Post Mod N663)03/18/1992
1 en Stabilisers - Horizontal Stabiliser - Control Rod Trunnion Gap - Inspection and Repair07/05/1994
1 en Stabilisers - Horizontal Stabiliser - Main Spar and Upper Skin - Inspection (Post Mod N663 and N768)03/31/1995
1 en Wings - Flap Hinge Arm Attachment - Inspection07/14/1997
1 en Alert Flight Controls - Ailerons - Inspection and Incorporation of Mod N63412/08/1993
5 en Alert Ailerons and Engine Cowls -- Inspection and Temporary Restrictions06/24/1999
2 en Alert Wings - Strut - Upper End Fitting (PN 1/N-20-643) - Inspection, Replacement and Bolt Replacement (Mod N654A and N654B)10/16/2001
en Alert Wings - Electrical - Aft Wing Break Connector - Incorporation of Mod N875 (N22) & N876 (N24)10/30/1995
1 en Alert Wings - Electrical - Aft Wing Break Connector - Incorporation of Mod N875 (N22) & N876 (N24)08/14/2001
1 en Alert Wings - Flap Operating Limitations08/14/2006
en Alert Propellers - Removal of Grease Nipple Covers08/09/1978
en Alert Power Plant - Electrical Harness - Starter Circuit Firewall Stud - Inspection and Replacement (Mod N789)06/22/1992
1 en Alert Exhaust - Nozzle Half Clamp Inspection/Modification08/12/1997
en Crew Seats - Relocation to Avoid Propeller Plane03/25/1977
en Flight Controls - Aileron System - Replacement of Chains at Control Column and at Aileron Sprocket Shaft Sta. 95.40. (Mod No. N6)09/11/1975
en Flight Controls - Rudder and Horizontal Stabiliser Trim Control System Replacement of Chain Systems (Mod N8)09/15/1975
en Alert Rudder Control System12/10/1976
en Alert Inspection of Rudder Pulley Mounting at Frame Station 67.95 and Addition of Tow Bar Angle Warning Paint Lines12/22/1976
en Fuel System - Tightness Check of Jubilee Type Hose Clamps Used in Fuel Lines09/26/1975
en Fuel System - Introduction of Pressure Relief Holes in Check Valves (Mod N52)12/22/1975
en Fuel System - Rework of Check Valves to Prevent Damage to Boost Pump Electrical Leads05/31/1976
en Alert Fuel Distribution Controls02/07/1977
1 en Fuel Distribution Control - Replacement of Control Knob & Spur Gear08/12/1977
en Relocation of the Outside Air Temperature Gauge05/24/1978
en Nose Wheel Door Retracting Mechanism - Improvement to Assembly of Braided Rubber Cord to Bellcrank08/08/1975
en Landing Gear - Retraction System - Replacement of Chains in System - Mod N.711/09/1975
en Alert Nose Landing Gear - Retraction System - Check of Tension of Chains in System10/08/1975
1 en Main Landing Gear03/02/1976
en Repositioning of Oxygen Regulators04/05/1978
en Main Undercarriage Pod - Increased Rigidity02/10/1978
en Alert Propeller - Locking of Nuts at Rear End of Beta Control Rod and Front of Feedback Rod03/25/1977
en Propeller Brake System - Removal from Aircraft07/20/1977
en Upper Engine Cowl Left Hand Stay - Removal03/22/1978
en Engine Oil Tanks - Tank Replacement to Overcome Possible Crack Development Leading to Leakage09/17/1975
en Engine Oil Temperature Indicators06/20/1977
en Placards on Rear Baggage Door06/28/1978
en New Airspeed Label (Mod N435)08/17/1981
en External Label - Emergency Exit03/31/1981
en Air Conditioning - Distribution - Plenum Chamber Flapper Valve Assembly Replacement (Mod N774)01/06/1992
en Air Conditioning - Hot Air Inlet Ducting - Check Valve - Replacement (Mod N788)04/21/1995
1 en Air Conditioning - Windscreen Demist - Improved Demist Outlets (Mod N862)04/16/2002
en Revised Electrical Loom Connectors Fitted to Options G48 and G48-24 (Autopilot) (Mod N291)04/09/1982
en Autopilot - Installation of RF Filter between Autopilot and Associated Loom Connectors (Mod N309)04/09/1982
en Replacement of VHF Communications Antenna (Mod N368 to Customer Options G73, G73-24, G121, G121-24, G295 and G295-24)10/21/1981
en Introduction of Flitetronics PC125 Inverter as a Replacement for the PC14C (Basic) or P14B(A) (Mod N228) Type Inverters04/15/1983
en Electrical Power - Battery and External Power Supply - Improved Earthing Points (Mod N836)11/01/1996
en Forward Cabin Windows - Impact Resistant Transparencies - Mod N45204/06/1983
en Nomad 24 Series Aircraft High Impact Windows Fitted to Fwd Cabin Windows at Station 150.0 (N464)03/19/1983
en Equipment and Furnishings - Improved Cabin Trim Retention (Mod N682 [N22 Series] or N682A [N24 Series])03/05/1990
en Equipment and Furnishings - Cockpit Sunvisors Non-Magnetic Arm (Mod N720)01/12/1999
1 en Flight Controls - Fitment of Mass Balance to Rudder Tab06/08/1979
2 en Control System - Improved Pulley Mounting at Station 67.95 (Mod N137)05/01/1986
en Horizontal Stabiliser - Revised Control Geometry (Mods N211 and N211-24)03/10/1982
en Flying Controls - Replacement of Control Rod Forkend Horizontal Stabilizer (Mod N426)12/06/1979
en Re-Alignment Horizontal Stabiliser Control Pulley (Mod N63)12/23/1981
en Flight Control Trim Indicator Systems (Mod N493)04/08/1981
1 en Universal Joint Replacement - Rudder Control (Mod N448)06/15/1984
en Redesigned Cable Clamps for Autopilot Systems (Mod N554)06/09/1982
en Flight Controls - Aileron & Flap Control Rod Fork Ends - Inspection10/08/1982
1 en Flight Controls - Aileron & Flap Control Rod Fork Ends - Inspection08/02/1996
1 en Redesigned Cable Clamps for Autopilot Rudder Servo Bridle Cable (Mod N555)02/07/1983
en Nomad N22-Series and N24-Series Aircraft Aileron Primary Cables 1 and 2 Inspection and Mod (N586)10/09/1982
en Repositioned Aileron Cable Fairlead (Mod N497)03/19/1984
en Control Column Cover (Mod N557)08/31/1984
en Incorrect Assembly of Inboard Brake Push Rod Upper Bolt07/30/1984
en Rudder Control System - Strengthening of Cable Pulley Mounting at Station 74.52 (Mod N630)05/01/1986
en Fitment of Outer Rudder Pedal Guard Plate (Mod N642)10/21/1985
en Horizontal Stabiliser Trim Tab Control Rods - Improved Range of Adjustment06/15/1987
en Light Controls -- Rudder Bellcrank - Inspection for Loose Rivets and Rework (Mod N686)09/18/1989
4 en Flight Controls - Rudder Pedal Pivot Arms - Inspection and Repair (Mod N794)07/14/1997
1 en Flight Controls - Flaps - Control Rod Inspection (Mod N797)10/01/1999
en Stabilisers - Horizontal Stabiliser - Trim Tab Clearance - Inspection and Rework06/15/1995
1 en Flight Controls - Rudder Pedals - Brake Push Rod - Inspection05/16/1995
en Flight Controls - Strengthening of Rudder Pulley Mounting Bracket at Station 74.52 (Mod N816)06/24/1996
en Flight Controls - Trim Control Screw-Jack Assemblies - Overhaul Life07/26/1999
en Flight Controls - Flap Microswitches - Incorporation of Mod N835 (N22) & N874 (N24)02/07/2003
en Flight Controls - Cable Terminal Ends Inspection02/28/2003
en Flight Controls - Horizontal Stabiliser - Trim Tab Backlash Measurement09/10/2007
en Alert Wing Fuel System - Outboard Fuel Tank Sump - Inspection of Molded Hoses for Defects11/27/1979
1 en Fuel - Introduction of Dual Commutator Fuel Boost Pumps (Mod N313)01/17/1990
2 en Fuel - Quantity Transmitters - Corrosion Inspection and Rework (Post Mod N3 and Option G99, G99F and G99M)09/17/1998
en Inspection of Flexible Fuel Hoses in Wings between Station 0 and Engine Nacelle Firewall10/20/1982
en Corrosion Protection of Inboard Fuel Tank Sump and Ferry Tank Sump (Option G41)07/31/1986
1 en Customer Option G28 and G28A Self-Sealing Fuel Tanks - Additional Support (Mod N625 Part A and C)05/07/1991
en Fuel - Auxiliary Tank - Installation of Non Return Valve in Filler Neck (Mod N693)02/06/1990
en Fuel - Auxiliary Tank - Modified Sealing of the Outboard Tank End (Mod N684)02/05/1990
2 en Fuel - Selector Control Cable - Improved Routing in Overhead Console (Mod N584)04/09/1997
en Fuel - Auxiliary Tank - Strengthened Pipe Assembly (Mod N681)02/12/1990
en Fuel - Storage - Fuel Tank Sumps (Mod N15)10/16/2000
en Ice and Rain Protection - Revised Mounting Bracket Tailplane De-Icing (Mod N779)03/20/1992
en Ice Protection Systems - Removal of Wing, Tailplane and Fin Boots and Related Systems03/17/2006
1 en Indication/Recording System - Aural Warning Unit - Relocation of Circuit Breakers (Mod N613)03/20/2002
1 en Installation of Stop Ring Assembly to Main Landing Gear Oleo Plunder (Mod N157 and N770)05/21/1992
1 en Nose Wheel Undercarriage - Exclusion of Nose Wheel Shimmy Contributory Factors05/06/1998
1 en Elimination of Openings in Nose Landing Gear Actuating Mechanism Housing (Mod N345)10/16/1981
en Repositioning of Main Landing Gear Indication and Limit Microswitches (Mod N101 N22 Series, N101-24 N24 Series)09/04/1981
en Retract Safety Microswitch Replacement (Mod N366)10/19/1981
1 en Leakage of Oleo Pluinger/Stub Axle Block10/11/1982
en Landing Gear - Inspection of Nose Landing Gear Actuator (Mod N521)05/25/1981
en Increased Chain Adjustment for Nose Landing Gear Retraction Mechanism (Mod N553)07/30/1982
en Improved Landing Gear Actuation (Mod N421)07/01/1983
en Removal of Main Landing Gear Flipper Doors (Mod N373)07/07/1983
en Fitment of Improved Nosewheel Fork (Mod N412)06/11/1987
1 en Landing Gear - Nose Gear Shimmy Damper Attachment Brackets (Mod N727)05/07/1991
en Landing Gear - Nose Gear Retraction Chain - Idler Sprocket Lateral Adjustment (Mod N840)06/26/2000
en Noise Suppression in HF Radio Equipment Generated by Strobe Light08/28/1978
en Introduction of Pilot's Map Light in Flight Compartment (Mod N546)10/05/1984
en Installation of Lightning Protection Earthing Braids between Radar Installation and Aircraft Fuselage (Mod N370)01/20/1982
en Rating of AC Synchro Fuse for ADF 1 (Customer Option G74) Changed from 0.5 Amp to 1.0 Amp (Mod N286)06/18/1981
en Rating of Synchro Fuse for ADF 2 (Customer Option G77) Changed from 0.5 Amp to 1.0 Amp (Mod N287)06/18/1981
1 en Introduction of KA42B Loop/Sense Antenna for King ADF Systems (Mod N422)03/21/1984
2 en Oxygen - Cabin Supply Pipe - Addition of Protective Sleeve (Mod N689)04/23/1991
1 en Airspeed Indicator Modification to Dial Markings02/06/1981
en Revised Airspeed Indicator Limit Marking (Vy) for N24A Series Aircraft10/06/1983
3 en Structures General - Fasteners - Improved Riveting of Skins (Mod N406 Part A)02/21/2000
en Structures General - Fibreglass Repairs - Alternate Repair Materials02/15/2017
en Installation of Stop Bracket on Emergency Exit Door Operating Mechanism (Mod N495)09/07/1981
en Doors - Aft Passenger Door - Improved Mechanical Stop (Mod N638)02/09/1990
en Doors - Improvement to Airstair Door (Mod N533)09/10/1990
en Doors - Crew Door Modifications and Additional Signs and Markings Required for Transport Category Operation (Mod N240 or N240-24)02/14/1990
en Doors - Forward Baggage Compartment Doors - Modified Latch Assemblies (Mod N731)12/26/1989
en Doors - Entrance - Utility Steps (CO G100) - Reinforcement (Mod N732)02/07/1995
en Static Vent Weather Proofing (Mod N289)02/12/1982
2 en Replacement of Fin/Horizontal Stabilizer Attachment Bracket12/06/1995
en Inspection of Stub Wing Upper Front Spar Cap Flanges Outboard of Landing Gear Screw Actuator Bays10/21/1986
en Fuselage - Reinforcement of Support Bracket for External Power Supply Receptacle (Mod N649)01/18/1990
en Fuselage - Enlarged Access Panel for Oleo Charging Valve in Pods (Mod N547)10/25/1989
en Fuselage - Additional Drain Holes in Stub Wing and Cabin Bottom Skin (Mod N629)02/07/1990
1 en Fuselage - Stubwing - Battery Support Structure Modification (Mod N735)04/18/1991
2 en Fuselage - Stub Wing - Wing Strut Fitting Assembly - Loose Attachment Bolts - Repair04/11/2000
en Fuselage - Forward Section - Rudder Torque Shaft Bearing Housing Attachment Bolts - Inspection06/27/1994
en Fuselage - Stub Wing - Strut Pick-Up Fitting - Fatigue Critical Inspection02/08/1996
1 en Fuselage - Stub Wing - Strut Pick-Up Fitting - Fatigue Critical Inspection01/14/2002
1 en Fuselage - Centre Section - Inspection of Frame Station 212.97(N22)/240.97(N24)11/30/2001
en Inspection of Stub Wing Upper Front Spar Cap Flanges - Revised Inspection Procedure06/04/2007
en Additional Clearance for Engine Exhaust Stacks12/01/1982
en Engine Nacelle - Earth Position Relocation (Mod N890)02/07/2001
4 en Horizontal Stabiliser - Vertical Fin and Trim Tabs - Structural and Operating Mechanism Inspection and Modification05/20/1993
en Horizontal Stabiliser - Weather Proofing08/31/1979
3 en Horizontal Stabiliser Trim Tabs Improved Durability of Control System (Mod N398)09/01/1980
2 en Installation of Horizontal Stabiliser Gust Lock (Mod N386)08/07/1981
1 en Horizontal Stabiliser - Improved Durability (Mod N407B)05/02/1980
1 en Horizontal Stabiliser - Introduction of Balanced Trim Tabs (Mod N439)12/04/1980
en Introduction of Lightning Protection for Horizontal Stabilizer (Mod N369)11/20/1981
en Introduction of Fibreglass Rudder Tip Fairing03/25/1983
en Reinforcing Channel Fitted between Stub Fin Forward Strings (Mod N477)07/01/1981
en Redesigned Rudder Stops (Mod N307)03/25/1983
1 en Upper Fin Rear Spar Pick-Up Plate (Mod N602)05/07/1991
en Horizontal Stabilizer - Additional Drainage Holes (Mod N618)06/12/1987
1 en Stabilisers - Horizontal Stabiliser - Control Rod Attachment Bolts - Inspection for Cracks09/20/1990
en Stabilisers - Horizontal Stabiliser - Pivot Bracket Bush Rework06/14/1991
en Stabilisers - Horizontal Stabiliser - Access Panel Intercostal Angles (Mod N407) and Upper and Lower Skins - Inspection04/22/1996
1 en Stabilisers - Horizontal Stabiliser - Access Panel Intercostal Angles (Mod N407) and Upper and Lower Skins - Inspection06/26/2001
en Stabilisers - Horizontal Stabiliser - Inspection and Balancing Instructions12/16/1998
en Emergency Exit Door - Improved Security of Outer Window (Mod N479)11/16/1981
en Inspection of Attachment of Cabin Windows to Fuselage Skin07/21/1981
en Additional Support for Window Security (Mod N481)11/06/1981
en Improvement of Wing Strut and Fairings (Mod N316)09/18/1981
1 en Wings - Wing Tank Bay Doors - Inspection for Threadbound Attachment Screws09/30/1997
en Reinforced Wing Strut Upper Fairing Attachment Points (Mod N476)09/09/1981
1 en Wings - Flap Seal Rubbing Strip Installation and Flap Upper Skin Repair (Mod N474 and Mod N474A)09/08/1989
2 en Wing Strut Bolt Replacement (Mod N654A and Mod N654B)06/06/1995
en Wings - Trailing Edge Access Doors Spot Welds - Inspection and Repair07/17/1998
3 en Wings - Fuel Tank Bays - Front and Rear Spars - Corrosion Inspection06/04/2007
en Wings - Ailerons - Once-Only Inspection of Condition and Serviceability06/30/1999
en Wings - Struts - Upper Strut Fitting Bolt Inspection, Line Reaming and Replacement04/07/2005
en Wings - Deactivation of De-Ice and Other Systems06/24/2005
1 en Engine Nacelle Lower Cowl - Repair10/21/1986
3 en Revised Engine Anti-Icing System (Mod N374)05/04/1984
en Improved Air Flow through Oil Cooler (Mod N359)11/25/1981
en Engine Controls - Strengthened Condition Lever Linkage (Mod N610)02/12/1990
1 en Revision of Maximum Continuous Power Turbine Outlet Temperature10/26/1984
en Redesigned Oil Stop Cock (Mod N376) - Improved Oil Stop Cock (Option G240 and G240-24) for Fitment of Engine Nacelle Lower Front Fairing (Post Mod N374)12/23/1980
en Oil - Revision of Oil Temperature Limits (Mod N640)01/22/1990
en Oil - Engine Oil Tank - Modified Oil Tank Outlet/Balance Pipe (Mod N763 and N764)10/26/2000
Service Letters
NameRevisionLangSubjectDate
en Nomad Fuel Selector System Rigging01/28/2000
en Air Conditioning - Cabin Heating - Alternative Replacement and Repair Procedures10/26/2000
en Flap Relay Contacts - Inspection07/23/2001
en Tailplane Pivot Bolt - Removal and Installation01/15/2002
en Rudder Pulley Mounting Bracket Inspection for Incorporation of Service Bulletin NMD-27-4809/29/2006
en Wing Strut Upper End Fitting - Incorporation of Service Bulletin NMD-57-1902/08/2007
1 en Flap Pivot Pins - Corrosion Inspection & Treatment04/06/1999
en Wiper Blade Assemblies10/01/1999